This is a very high-stakes and emotional time of year for seniors. You can almost feel the collective tension as students and families check their mailboxes daily for the coveted acceptance letter. As colleges make the transition from the mailbox to your electronic inbox, mistakes like this can happen. Imagine being rejected by the college of your dreams, accepted, then rejected again? That what happened to a select group of candidates in Johns Hopkins early admissions program. Akane Otani from Bloomberg Businessweek reports on what just happened at this otherwise reputable institution.